diff --git a/src/include/timer.h b/src/include/timer.h
index 65ce9b4b79..49eae5ec40 100644
--- a/src/include/timer.h
+++ b/src/include/timer.h
@@ -15,6 +15,7 @@
 #ifndef TIMER_H
 #define TIMER_H
 
+#define NSECS_PER_SEC 1000000000
 #define USECS_PER_SEC 1000000
 #define MSECS_PER_SEC 1000
 #define USECS_PER_MSEC (USECS_PER_SEC / MSECS_PER_SEC)